Ventilator.



J. M. ROSE. y v

VENTILATO'R.

APPLIGATION FILED AUG. 15, 1912.

1,068,068. Patented May 27, 1913.

, yunirsi) srAtrEs Parr-ENT omnes.

JAMES M. ROSE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO,MERCHANT &

EVANS COMPANY, OF PHILADELPHIA, PENNSYLVANIA, CORPORATION OF NEW JERSEY. p

VENTILATOR.

Specication of;` Letter-s latent.

Patented May-27,1913.

Application vledAugiust 1 5, 1912. Serial No. 715,259.

To all whom t may concern.;

Be it known that I, JAMES M. Boss, a citizen of thel United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Ventilators, of which the following is a specification.

One object of my invention vis to provide a ventilator Wit-ha novel form of valve and operating mechanism therefor, of such a construction as to automatically close` whenever the temperature of the air in its.im mediate vicinity rises above a pre-determined point; the arrangement of parts being such, however,as to permit of the man- Aual operation of the valve after it has automat-ically closed as well as4 before such operation.

I further desire to provide a ventilator of the above noted type which shall have its parts so combined that their action shall be certain, and their number small while the apparatus itself shall be simple and' substantial as to its design andstructure, as well as inexpensive to manufacture. I

-These objects and other advantageous ends I secure as hereinafter set forth, reference being had tov the accompanying drawings in which,

Figure 1 isa vertical section illustrating the-detail construction of a ventilator embodying my invention, the valve being shown in `its closed position, and Fig. 2 is a vertical section similar to Fig. 1 but showing the valve in its open position.

In the above drawings, 1 lrepresents a cylindrical body of sheet material on the outside surface of which are fastened brackets 2 designed tosupport a second cylindrical sieet metal structure 3. This latter is of larger diameter than the casing 1 'and is above, although concentric with the same.

In the present instance the brackets 2 are made of heavy strips of metal which are extended above the side member 3, as indicated at 4, and are turned over so as to serve for the support of an annular top piece-.5 which is carried immediately above the side mem-` ber 3. The brackets arealso provided with inwardly extending branches 7 serving to support a conical cover 8 whose top is slightly above the plane of the top edge of the side, member 3 while its outer edges lie below this plane, and beyond the lines of the body 1. Extending horizontally across this latter is a brace ortie rod 9 having an angle piece 10, mounted at substantially its central part, and servingwith the cover 8 as the supporting means of a rod 11 which extends in the cent-ral line of the ventilator. The lower end of this rod is preferably threaded and provided with a pair of nuts on opposite sides of the angle piece 10 so that it may be made to rigidly connect the said cover and the brace 9. Slidably mounted onthis rod is a disk 12 of sheet metal of such a diameter as to extend slightly beyond the upper edges of the cylindrical bodyr 1, on .which itA rests when in its lower or closed position. I further provide a guide piece 13 on top of this disk valve designed to prevent tilting thereof asit is moved up or ,down on .the lrod 11.

For operating the valve, I provide a lever 14 fulcrumed on the screw 15, whereby the angle piece 10 is held .to the brace 9, and

having pivoted to one end a .bar 'forming a link 16 whose upper end is turned over as shown at.17. This end is provided with an A opening through which passes the central `rod 11;.it being noted that said opening is 'of sulficlent diameter to permit of thelink soA 16 'freely sliding on said rod when the lever Y 14 is turned on its pivot or fulcrum 15. The

length of the-said link 16 is such that whenthe lever 14 is in the position shown in Fig. 1, 1n a line at about 30 `degrees to the horizontal, the turned over end 17 is in engage-l ment with, or immediately adjacent to, the under side of the valve disk 12.

The end of the lever 14 opposite that hav-ing the link 16 has attached to it a chain 18, to two of whose widely separated links are connected the two parts'19 and 20. of a fusible link or temperaturel responsive conoff of the chain.

Under conditions of use the valve disk 12 may be moved toits raised or open position by a downward force exerted on the chain 18 and transmit-ted through the parts 19 and -20 of the fusible link to the lever 14. Such force turns. the lever from the position ,lire whose products of combustion pass out through the ventilator, the fusible metal connecting the parts 19 and 2.0 of the link would melt, thus releasing the end of the lever 14 so that under the action of gravity on the valve disk 12 and link 16, the lever 14 would be returnedto the position shown `in Fig. 1, and said valve disk would seat on the upper end of the cylindrical body 1.

With the above described arrangement of parts, the possibility of the valve sticking so as to remain in its open position after the fusible link has melted, is reduced to a minimum and in addition it will be noted that the valve is still connected to the 'operating -chain even after the fusible link has permitted closing of said valve. Moreover the valve operating means formed by the chain, lever 14 and link 16, are of the simplest and most inexpensive character so that the application of the device to ventilators, especially those of -the well known type, is neither costly nor inconvenient.

1. The combination with a ventilator having a body conduit; of a movable valve formed to seat on said conduit; and o erating means for the valve consisting of a ever;

a link connected to said lever and loosely of a valve slidable on said guide bar; a link having on one end slidable on the guide bar and engaging the valve; a lever pivoted to said link; and means for actuating the lever.

4. The combination with a ventilator having a substantially cylindrical body conduit of a valve formed of a substantially 'flat sheet of metalmounted to seat on one end of said conduit; a rod supported by said body Iconduit and passing through the valve so as'to guide the same; with a device for raising and lowering said valve consisting of a link having one end guided on the rod and' loosely engaging the valve; a cross bar carried by the body conduit; a lever fulcrumedl to said bar and havingone end pivoted to said link; and c erating means connected to the other end o the lever.

In testimony whereof, I have signed my name to this specification, in the presence of twosubscribing wit-nesses.

- JAMES M. ROSE. Witnesses:

WILLIAM E. BRADLEY, WM. A. BArm 

